System for dispensing gasoline



C. SCHOCK SYSTEM FOR DISPENSING GASOLINE F1186 Jan. 7, 1924 Patented Dec. 1, 1925.

PATENT OFFICE.

CLARENCE SCI'IOCK, OF MOUNT JOY, PENNSYLVANIA.

SYSTEM FOR DISPENSING GASOLINE.

Application filed Janua y 7, 1924. Serial No. 684,894.

To all whom it may concern.

Be it known that I, CLARENCE Soiiocn, a citizen of the United States, residing at Mount Joy, in the county of Lancaster and State of Pennsylvania, have invented certure, and the leak of gasoline from the outlet nozzle of the fillingtube is reduced to a minimum.

One of the objects of my invention is to provide for the flow of excess gasoline, by

gravity, back to the underground storage tank located outside of the garage, so that no gasoline remains in the piping of the system in the interval between filling operations.

Another object of invention is to prevent filling of the gasoline tank of an automobile unless the door of the garage is open, thereby minimizing the danger incident to the handling of gasoline and the presence of its vapors in a small structure.

A further object of my invention is to lead the outlet nozzle of the filling tube, when not in use, to a drip pipe extending through the door of the garage so that any leakage of gasoline through said nozzle will be deposited outside of the garage.

A still further object of my invention is to provide a device which is of simple construction and inexpensive to manufacture and install. I

Referring to the drawings:

Figure 1 is a general view showing the installation of the system with the door of the garage swung open.

Figure 2 is a cross-section taken on the line 22 of Figure 1.

Figure 3 is a cross-section taken on th line 33 of Figure 1, and

Figure 4 is a view, partly in cross-section, showing the lower portion of the pump with valve lifting means to enable the operator to drain any gasoline which is left in the pump back to the storage tank.

The hand pump 1, of conventional c011- struction, is aifixed to the wall of the garage by brackets, not shown. A suction pipe 2 passes through the wall of the garage and connects the inlet of this pump with an underground storage tank located at a distance from the garage.

Discharge pipe 3 rises vertically from the pump along the wall or door frame of the garage to a point adjacent the roof where it is connected to a laterally extending pipe 4c by means of an elbow joint.

Door-post 5 serves as a support for the elbow joint 6 to which is attached a rubber or flexible metal hose 7 terminating, at its lower end, in a second elbow joint referred to generally at 8, Figure 1. A rigid metal pipe 9 is fixedly connected at one end to elbow joint 8 while its other end is normally telescoped within the waste pipe 10.

The waste pipe 10 is shown in detail in Figure 2. This pipe comprises a section bent upwardly and at an angle to facilitate insertion of the gasoline discharge nozzle on the inside of the garage door. This pipe section is flanged as at 11 and is externally screw-threaded for the reception of the internally screw-threaded and flanged section 12 which extends beyond the exterior surface of the door, the flange of section 12 being drilled to receive bolts, screws, or other suitable means for fastening the waste pipe to the lower portion of the garage door. Thus I attain one of the primary objects of my invention, namely, to conduct all waste gasoline which may collect in the flexible tube 5 and pipe 9 during the filling operation, away from the garage structure.

A second object of my invention is accomplished by the use of bracket 13 shown in detail in Figure 3. This bracket is affixed to the door of the garage by any suitable means such as bolts or screws. That portion of the bracket nearest the inner edge of the door is bent outwardly from the surface of the door, and then laterally to receive the elbow joint 8. When the door is in its open position, as shown in Figure 1, joint 8 may be easily removed from the bracket 13 to aposition as shown in dotted lines, Figure 1, to permit of filling the gasoline tank of an automobile. But with the door in its closed position as shown in Figure 3 the edge of the bracket 13 lies close to the door-post thereby preventing removal of the filling nozzle of pipe 9 from the waste pipe 10 which, because of its angled shape, necessitates removal of pipe 9 by backward as well as upward movement. The filling of the automobile gasoline tank is there fore made impossible whilethe garage door is shut. 7

To minimize waste of gasoline and to prevent the existence of residual gasoline in the supply line the laterally extending pipe 4: is inclined downwardly toward the source of gasoline supply as clearly shown in Figure 1. Thus any gasoline remaining in the line after a filling operation immediately drainsby gravity back to the pump.

It has been found to be desirable in the furtherance of the objects of thisinvention to keep the pump drained of gasoline when not in use. To thatend I have provided a valve lifting mechanism shown in detailed cross-section in Figure i of the drawing.

A manually operated valve lifting member lt, adapted for reciprocating movement alone has a slot 15 formed in its body portion, and its inner end is bevelled or inclined to cooperate with the stem of a conventional type of pump valve indicated at 16 The headof this valve is raised by inward move ment of the lifting member thereby uncovering the openings in the bottom of the pump chambera'nd allowing any gasoline remaining in this chamber to drain back into the undergroi'ind storage tank. Lateral movement'of the lifting member is insured by set-screw"17, threaded through collar 18, which, withboss 19 on the pump chamber, forms a stuffing-box;-

The stuflfing-box is filled with-packingto prevent the escape of gasoline along the 'stem of member 1'4; The set-screw 17 engagesslot-=15 to li-mitlateral movement of the valve lifting member, and also to prevent any turning movement of the stem of said member which movement would 'turn the tuate the valve lifting member 14, there is provided a small drain hole 20 in the head of valve-16 and a-similar hole 21 in the piston head 22 of the pump.- The piston head is also constructed with a valve28 of conventional type.

The provision of drain holes 20 and 21 will not materially interfere with the operationof the pump inasmuch as they are so restricted that the-loss of pressure, which is created" by actuation of the piston, is exceedingly] small and drainage back to the underground storage tank is slow.

The invention is not to be understood as lin1-it-ed= -to' the pump construction shown in Figure a of the-drawing,= the lift ipump beingshownmerelyfor the' -purpose of for use only when saidjmeans-is swung to a predetermined position, the said pivoted means being provided Wiltil an opening through which the outlet tube extends when supported thereby.

2. In combination a member adapted to swing relative to a lined wall, piping mounted on said member to swing therewith and accessible in all positions of said member, a bracket on said member for supporting the piping, said bracket cooperating with said fixed wall and thereby acting to retain said piping from displacement when the said member is swung to a predet'er mined position.

3. A system for dispensing gasoline com prising a garage structure, a door rrame, a hand pump located on the wall of said structure in communication with a-gasoline storage tank, piping rising from said pump to a point adjacent the top of the door frame, thence laterally across to the other side of said frame, the lateral portion of said piping being inclined downwardly in the direction of the pump, and means operable to permit unobstructed communication betweensaid piping and tank whereby after a pumping operation the gasoline in said piping may flow back to the storage tank.

4. A system for handling-gasoline compr'sin'g a garage structure, a door-frame, 'a

door attached thereto, a pumpalid piping connecting said pump with-an outlet nozzle,

and means mounted on the door to receive said nozzle and conduct waste gasoline to the exterior of the garage structure.

5. A system for dispensing inflammable liquid comprising a building structure, a door attached to said structure, a pump located within the structure,- piping leading from the pump to an outlet nozzle, a bracket formed on the door of said structure and supporting a portion of said piping to prevent removal of the piping when the door of the structure is closed, and a waste pipe passing through the door'of said structure for receiving the said outlet nozzle when not in use;

In testimony whereof, I have hereunto aiiixed my signature:-

CLARENCE SCHOCK. 

